With so much vibration on your mower it is very likely that your blade is out of balance.
I personally haven't had a problem with Briggs, I know they filed bankruptcy a while back and as the owner of the Snapper and Simplicity brands they discontinued them. I am hearing of parts unavailability on Simplicity from a friend at another shop.What issues are you having with Briggs and Stratton?
The engine vibration could be from a slightly off balance blade or the piece the blade attaches to.I have a Craftsman lawn mower and a Craftsman snow blower. I purchased the lawn mower new about 3 or 4 years ago. The engine is a 163CC B&S which is fine, but the rest of the mower is a total POS. The exit chute on the housing was designed out of cheap plastic, and it falls off even if I bump something lightly with it. It's also held in place by a rod passing through two eyelets, with nothing on the ends of the rod to hold it in place. Engine vibration causes the rod to come out on a regular basis. I have since modified both so they at least stay on now. The gas cap will also loosen from engine vibration and come off while mowing. I haven't figured out a mod to correct this issue yet.
The snow blower was purchased from the original owner who purchased it new in 2018. He never used it, so it was still basically brand new when I bought it. I have literally used it 4 times, and it's now leaking oil. I remember when Craftsman made quality products. I guess their quality control has gone to **** since they started having all of their stuff outsourced, or bean counters within the company are dictating the corner cutting. Either way, I'm done buying anything with the Craftsman name on it if it has a gas engine on it...
Could be, but these engines aren't smooth without taking the blade into account...The engine vibration could be from a slightly off balance blade or the piece the blade attaches to.
I wouldn't put 6 year old gas in my car, never mind a small engine, even if it was purchased from somewhere claiming it was E0.With the "up to 6"" of snow expected, I got the Craftsman out. I didn't even start it last year. I decided I'm not fooling with Sta Bil, as the gas can already had it (gas must be maybe 6+ years old) and I filled it.